<template>
  <el-form ref="postForm" :model="postForm" :rules="rules">
    <sticky :class-name="'sub-navbar'">
      <el-button v-if="!isEdit" @click="showGuide">显示帮助</el-button>
      <el-button
        v-loading="loading"
        type="success"
        style="margin-left: 10px"
        @click="submitForm"
      >
        {{isEdit ? '编辑电子书': '新增电子书'}}
      </el-button>
    </sticky>
    <div class="detail-container">
      <el-row>
        <warning/>
        <el-col :span="24">
          <!--上传表单控件具体样式-->
          <ebook-upload
            :file-list="fileList"
            :disabled="isEdit"
            @onSuccess="onUploadSuccess"
            @onRemove="onUploadRemove"
          ></ebook-upload>
        </el-col>
        <el-col :span="24">
          <el-form-item prop="title">
            <MdInput v-model="postForm.title" :maxlength="100" name="name" required>书名</MdInput>
          </el-form-item>
          <el-row>
            <el-col :span="12">
              <el-form-item prop="author" label="作者：" :label-width="labelWidth">
                <el-input v-model="postForm.author" placeholder="作者"/>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="publisher" label="出版社：" :label-width="labelWidth">
                <el-input v-model="postForm.publisher" placeholder="出版社"/>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
            <el-col :span="12">
              <el-form-item prop="language" label="语言：" :label-width="labelWidth">
                <el-input v-model="postForm.language" placeholder="语言"/>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="rootFile" label="根文件：" :label-width="labelWidth">
                <el-input v-model="postForm.rootFile" placeholder="根文件" disabled/>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
            <el-col :span="12">
              <el-form-item prop="filePath" label="文件路径：" :label-width="labelWidth">
                <el-input v-model="postForm.filePath" placeholder="文件路径" disabled/>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="unzipPath" label="解压路径：" :label-width="labelWidth">
                <el-input v-model="postForm.unzipPath" placeholder="解压路径" disabled/>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
            <el-col :span="12">
              <el-form-item prop="coverPath" label="封面路径：" :label-width="labelWidth">
                <el-input v-model="postForm.coverPath" placeholder="封面路径" disabled/>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="originalName" label="文件名称：" :label-width="labelWidth">
                <el-input v-model="postForm.originalName" placeholder="文件名称" disabled/>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row>
            <el-col :span="24">
              <el-form-item prop="cover" label="封面：" :label-width="labelWidth">
                <a v-if="postForm.cover" :href="postForm.cover" target="_blank">
                  <img :src="postForm.cover" class="preview-img">
                </a>
                <span v-else>无</span>
              </el-form-item>
            </el-col>
            <el-col :span="24">
              <el-form-item label="目录:" label-width="110px">
                <div v-if="contentsTree && contentsTree.length>0" class="contents_wrapper">
                  <el-tree :data="contentsTree" @node-click="onContentClick"/>
                </div>
                <span v-else>无</span>
              </el-form-item>
            </el-col>
          </el-row>
        </el-col>
      </el-row>

    </div>
  </el-form>
</template>

<script>
  import Sticky from '../../../components/Sticky';
  import Warning from './Warning';
  import EbookUpload from '../../../components/EbookUpload';
  import MdInput from "../../../components/MDinput/index";
  import {createBook, getBook, updateBook} from '../../../api/book';


  const defaultForm = {
    title: '',
    author: '',
    publisher: '',
    language: '',
    rootFile: '',
    cover: '',
    url: '',
    originalName: '',
    fileName: '',
    coverPath: '',
    filePath: '',
    unzipPath: '',
  }
  const fields = {
    title: '书名',
    author: '作者',
    publisher: '出版社',
    language: '语言'
  }

  export default {
    data() {
      const validateRequire = (rule, value, callback) => {
        if (value.length === 0) {
          callback(new Error(fields[rule.field] + '必须填写'))
        } else {
          callback()
        }
      }    //检验方法
      return {
        loading: false,
        postForm: {
          status: '',
        },
        fileList: [],
        labelWidth: '120px',
        contentsTree: '',
        rules: {
          title: [{validator: validateRequire}],
          author: [{validator: validateRequire}],
          language: [{validator: validateRequire}],
          publisher: [{validator: validateRequire}],

        }
      }
    },
    components: {
      MdInput,
      Sticky,
      Warning,
      EbookUpload
    },
    props: {
      isEdit: Boolean
    },
    methods: {
      onContentClick(data) {
        console.log(data)
        if (data.text) {
          window.open(data.text)
        }
      },
      showGuide() {
        console.log("showGuide")
      },
      submitForm() {
        const onSuccess = (response) => {
          const {msg} = response
          this.$notify({
            title: '操作成功',
            message: msg,
            type: 'success',
            duration: 2000
          })
          this.loading = false
        }

        if (!this.loading) {
          this.loading = true
          this.$refs.postForm.validate((valid, fields) => {
            if (valid) {
              const book = Object.assign({}, this.postForm)
              delete book.contentsTree
              // delete book.contents
              if (!this.isEdit) {
                createBook(book).then(response => {
                  onSuccess(response)
                  this.setDefalut()
                }).catch(() => {
                  this.loading = false
                })
              } else {
                updateBook(book).then(response => {
                  onSuccess(response)
                }).catch(() => {
                  this.loading = false
                })
              }
            } else {
              const message = fields[Object.keys(fields)[0]][0].message
              this.$message({
                message,
                type: 'error'
              })
              this.loading = false
            }
          })
        }
      },
      setData(data) {
        const {
          title,
          author,
          publisher,
          language,
          rootFile,
          cover,
          url,
          originalName,
          contents,
          fileName,
          coverPath,
          filePath,
          unzipPath,
          contentsTree
        } = data
        this.postForm = {
          ...this.postForm,
          title,
          author,
          publisher,
          language,
          rootFile,
          cover,
          url,
          originalName,
          contents,
          fileName,
          coverPath,
          filePath,
          unzipPath,
          contentsTree
        }
        this.contentsTree = contentsTree
        this.fileList = [{name: originalName || fileName, url}]

      },
      setDefalut() {
        this.postForm = Object.assign({}, defaultForm)
        this.contentsTree = []
        this.fileList = []
        this.$refs.postForm.resetFields()
      },
      onUploadSuccess(data) {
        // console.log("onUploadSuccess", data)
        this.setData(data)
      },
      onUploadRemove() {
        this.setDefalut()
      },
      getBookData(fileName) {
        console.log(fileName)
        getBook(fileName).then(response => {
          console.log("response", response)
          this.setData(response.data)
        })
      },
    },
    created() {
      // console.log(this.$route.params)
      if (this.isEdit) {
        const fileName = this.$route.params.fileName
        this.getBookData(fileName)
      }
    },
  }
</script>


<style scoped>
  .detail-container {
    padding: 40px 50px 20px;
  }

  .preview-img {
    width: 330px;
    height: 500px;
  }
</style>
